#!/bin/bash

accepted_java_versions=(11 17)

NAME=smartgears-helloworld
PORT=8081
DEBUG_PORT=5005
DEBUG=false
COMPILE=true
java_version=11


CONTAINERFILE=docker/container.ini


################################################################################
# Help                                                                         #
################################################################################
Help() {
    # Display Help
    echo "build, create and run in docker the helloworld service"
    echo
    echo "Syntax: buildDistribution [-n arg] [-p arg] [-j arg] [-d arg?] [-h]"
    echo "options:"
    echo "-s         skip maven package"
    echo "-n arg     specifies the docker image name (default is smartgears-helloworld)."
    echo "-p arg     specifies the port to be exposed for the docker container to access the service (default $PORT)"
    echo "-j arg     specify java version (default is $java_version)"
    echo "           accepted version are: ${accepted_java_versions[@]}"
    echo "-d arg?    enable java debug mode"
    echo "           arg is the debug port (default is $DEBUG_PORT)"
    echo "-h         Print this Help."
    echo
}

################################################################################
################################################################################
# Main program                                                                 #
################################################################################
################################################################################

set -e

OPTSTRING=":sn:p:d:j:?h"

while getopts $OPTSTRING opt; do
    # echo "Option -${opt} was triggered, Argument: ${OPTARG}"
    case "${opt}" in
    s)  COMPILE=false && echo "compile $COMPILE" ;;
    n)  NAME=${OPTARG} ;;
    p)  PORT=${OPTARG} ;;
    d)  DEBUG=true
        DEBUG_PORT=${OPTARG}
        echo "debug enabled, port $DEBUG_PORT"
        ;;
    j) if [[ ${accepted_java_versions[@]} =~ ${OPTARG} ]]; then
            java_version=${OPTARG}
        else
            echo "Invalid java version" && echo "accepted version are: ${accepted_java_versions[@]}" && exit 1
        fi
        ;;
    h) Help && exit 0 ;;
    :) # matched when an option that is expected to have an argument is passed without one
        if [ ${OPTARG} = "d" ]; then 
            DEBUG=true
            echo "debug enabled, port $DEBUG_PORT"
        else 
            # matched when an option that is expected to have an argument is passed without one
            echo "Option -${OPTARG} requires an argument."
            exit 1
        fi
        ;;
    ?) # match any invalid option that is passed
        echo "Invalid option: -${OPTARG}."
        exit 1
        ;;
    esac
done

if ! test -e "$CONTAINERFILE"; then
    echo "missing docker/container.ini file. 
    
Create and configurate your container.config.ini file from container.default.ini, 
then create a symbolic link to container.ini
    
    cp docker/container.default.ini docker/container.configuration.ini
    ln -s docker/container.configuration.ini docker/container.ini"
    exit 1;
fi

if [ $COMPILE = true ]; then 
    mvn clean package
else
    echo "skipping mvn package"
fi

docker build -t $NAME --build-arg JAVA_VERSION=${java_version} .

if [ $DEBUG = false ]; then
    docker run -p $PORT:8080 $NAME
else
    docker run -p $PORT:8080 -p $DEBUG_PORT:5005 -e JAVA_TOOL_OPTIONS="-agentlib:jdwp=transport=dt_socket,address=*:5005,server=y,suspend=y" $NAME
fi